HBASE-7770 minor integration test framework fixes (Francis Liu)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1502415 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8832 Ensure HBASE-4658 is supported by Thrift 2 (Hamed Madani)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1502431 13f79535-47bb-0310-9956-ffa450edef68